Send keys Problem

I am trying to send commands to another program. When sending to a normal form, everything works fine..When sending to the mdi form everything works fine....But when sending to a child in a mdi form nothing happens. How can I send Key commands to a mdi child form.

1. Use "FindWindowE" API
-> You can find child window.
-> If you succeed finding window, it return value not 0.

2. Use "SetWindowPos" API
-> You can set child window topmost.

3. And then send keys to child window.

* Caution : API Text Viewer ( in VB )
-> Don't trust 100% !
-> Some argument is wrong.
-> ex) "Byval A as String" is wrong, "Byval A as Long" is right.
-> If you can't get data though you followed right step,
try changing declare like above.

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